zaphod@localhost:~/Downloads$ apt-cache policy firmware-iwlwifi
firmware-iwlwifi:
  Installed: 0.28+squeeze1
  Candidate: 0.36+wheezy.1
  Version table:
     0.36+wheezy.1 0
        500 http://http.debian.net/debian/ wheezy/non-free amd64 Packages
 *** 0.28+squeeze1 0
        100 /var/lib/dpkg/status